package com.filter.example;

import com.solo.entity.User;

import javax.servlet.*;
import javax.servlet.annotation.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebFilter(filterName = "LoginFilter", urlPatterns = "/views/*")
public class LoginFilter implements Filter {
    public void init(FilterConfig config) throws ServletException {
    }

    public void destroy() {
    }

    @Override
    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest request1 = (HttpServletRequest) request;
        HttpServletResponse response1 = (HttpServletResponse) response;

        HttpSession session = request1.getSession();
        User user = (User)session.getAttribute("user");
        if(user == null){
            response1.sendRedirect(request1.getContextPath() + "/login.jsp");
            return;
        }
        chain.doFilter(request, response);
    }
}
